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Mantid Discussions
General Mantid Discussions
Diapause question
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<blockquote data-quote="Christian" data-source="post: 12424" data-attributes="member: 62"><p>Hi.</p><p></p><p>In temperate zones, the diapause is induced <strong>in advance</strong> mostly by the photoperiod. A true diapause is characterized by a special membrane appearing then, which surrounds the embryo. It prevents the embryo of hatching too early when wheather is warm - that's why it is be induced by photoperiod, when it's still warm. The diapuse is broken up by better climatic conditions, but only after a certain time. So, the hatchlings cannot emerge during warm days in winter.</p><p></p><p>Tropical species do not undertake a real diapause, this is called dormancy and is <strong>directly</strong> induced by worse living conditions. As well, it ends immediately when it gets better.</p><p></p><p>The differentiation between these both is not easy. There are some mixtures of both existing.</p><p></p><p>It's not important for breeding, though. If a species comes from a region with a colder/dryer/hotter period, why not offering it the adequate climate?</p><p></p><p>Regards,</p><p></p><p>Christian</p></blockquote><p></p>
[QUOTE="Christian, post: 12424, member: 62"] Hi. In temperate zones, the diapause is induced [B]in advance[/B] mostly by the photoperiod. A true diapause is characterized by a special membrane appearing then, which surrounds the embryo. It prevents the embryo of hatching too early when wheather is warm - that's why it is be induced by photoperiod, when it's still warm. The diapuse is broken up by better climatic conditions, but only after a certain time. So, the hatchlings cannot emerge during warm days in winter. Tropical species do not undertake a real diapause, this is called dormancy and is [B]directly[/B] induced by worse living conditions. As well, it ends immediately when it gets better. The differentiation between these both is not easy. There are some mixtures of both existing. It's not important for breeding, though. If a species comes from a region with a colder/dryer/hotter period, why not offering it the adequate climate? Regards, Christian [/QUOTE]
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Diapause question
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